| /* |
| * Licensed to the Apache Software Foundation (ASF) under one or more |
| * contributor license agreements. See the NOTICE file distributed with |
| * this work for additional information regarding copyright ownership. |
| * The ASF licenses this file to You under the Apache License, Version 2.0 |
| * (the "License"); you may not use this file except in compliance with |
| * the License. You may obtain a copy of the License at |
| * |
| * http://www.apache.org/licenses/LICENSE-2.0 |
| * |
| * Unless required by applicable law or agreed to in writing, software |
| * distributed under the License is distributed on an "AS IS" BASIS, |
| * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
| * See the License for the specific language governing permissions and |
| * limitations under the License. |
| */ |
| package org.apache.tomee.patch.core; |
| |
| import org.apache.commons.compress.archivers.tar.TarArchiveEntry; |
| import org.apache.commons.compress.archivers.tar.TarArchiveOutputStream; |
| import org.tomitribe.util.IO; |
| |
| import java.io.ByteArrayOutputStream; |
| import java.io.File; |
| import java.io.IOException; |
| import java.io.InputStream; |
| import java.util.zip.GZIPOutputStream; |
| import java.util.zip.ZipEntry; |
| import java.util.zip.ZipInputStream; |
| |
| public class ZipToTar { |
| |
| public static File toTarGz(final File zip) throws Exception { |
| |
| final String tarGzName = zip.getName().replaceAll("\\.(zip|jar)$", ".tar.gz"); |
| final File tarGz = new File(zip.getParentFile(), tarGzName); |
| |
| try (final InputStream in = IO.read(zip); final TarArchiveOutputStream tarOut = tar(tarGz)) { |
| |
| tarOut.setLongFileMode(TarArchiveOutputStream.LONGFILE_POSIX); |
| |
| final ZipInputStream zipIn = new ZipInputStream(in); |
| |
| ZipEntry zipEntry; |
| while ((zipEntry = zipIn.getNextEntry()) != null) { |
| final String name = zipEntry.getName(); |
| |
| // The ZipEntry often shows -1 as the size and the |
| // TarArchiveOutputStream API requires us to know the |
| // exact size before we start writing. So we have to |
| // buffer everything in memory first to learn the size |
| final ByteArrayOutputStream buffer = new ByteArrayOutputStream(); |
| IO.copy(zipIn, buffer); |
| final byte[] bytes = buffer.toByteArray(); |
| |
| final TarArchiveEntry tarEntry = new TarArchiveEntry(name); |
| |
| // Set the size and date |
| tarEntry.setSize(bytes.length); |
| tarEntry.setModTime(zipEntry.getLastModifiedTime().toMillis()); |
| |
| // Mark any shell scripts as executable |
| if (name.endsWith(".sh")) { |
| tarEntry.setMode(493); |
| } |
| |
| // Finally out the Entry into the archive |
| // Any attributes set on tarEntry after this |
| // point are ignored. |
| tarOut.putArchiveEntry(tarEntry); |
| |
| IO.copy(bytes, tarOut); |
| tarOut.closeArchiveEntry(); |
| } |
| |
| tarOut.finish(); |
| } |
| |
| return tarGz; |
| } |
| |
| private static TarArchiveOutputStream tar(final File tarGz) throws IOException { |
| return new TarArchiveOutputStream(new GZIPOutputStream(IO.write(tarGz))); |
| } |
| } |